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orzo
OS
Os
os (1)
os (2)
OSA
Osage (1)
Osage (2)
Osage orange
Osaka
Oscan
Oscar (1)
Oscar (2)
OSCE
oscillate
oscillating universe
oscillogram
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orthotropous
or·thot·ro·pous [ awr thóttrəpəss ]


adjective 
Definition:
 
growing straight: describes an ovule that grows straight
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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